class Host:
    name: str
    port: int
    username: str
    password: str

    def __init__(self, name, port=22, username='', password=''):
        self.name = name
        self.port = port
        self.username = username
        self.password = password

    def __str__(self):
        return '%s@%s:%d' % (self.username, self.name, self.port)
